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Callan Bentley's Snapshots

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  1. Great looking sand

    Snapshot Title: Great looking sand
    Taken by: Callan Bentley

    Image: Calvert Cliffs Sand
    Image Owner: Robin Rohrback-Schiavone



    Description:

    .



  2. Multicolored

    Snapshot Title: Multicolored
    Taken by: Callan Bentley

    Image: Sand from LaParee Beach, Bretignolles-sur-Mer, France
    Image Owner: Robin Rohrback-Schiavone



    Description:

    well rounded, too!



  3. Focus contrast

    Snapshot Title: Focus contrast
    Taken by: Callan Bentley

    Image: Setters Schist
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Some areas are in focus, others aren't, like the big porphyroblast of garnet in the lower right of this snapshot.



  4. Some doubling up

    Snapshot Title: Some doubling up
    Taken by: Callan Bentley

    Image: Setters Schist
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Image stacking slightly misaligned. Arrrgh.



  5. Mud laminations

    Snapshot Title: Mud laminations
    Taken by: Callan Bentley

    Image: Konnarock Formation as Cautionary Tale 2
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Very fine-grains; very calm deposition (lake bottom?)



  6. Arkosic sand

    Snapshot Title: Arkosic sand
    Taken by: Callan Bentley

    Image: Konnarock Formation as Cautionary Tale 2
    Image Owner: Robin Rohrback-Schiavone



    Description:

    .



  7. Climbing ripples?

    Snapshot Title: Climbing ripples?
    Taken by: Callan Bentley

    Image: Konnarock Formation as Cautionary Tale 2
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Is that what's going on here?



  8. Flame structure

    Snapshot Title: Flame structure
    Taken by: Callan Bentley

    Image: Konnarock Formation as Cautionary Tale 2
    Image Owner: Robin Rohrback-Schiavone



    Description:

    soft sediment deformation - graviational instability generated by the sudden deposition of a bolus of sand atop layers of squishy mud.



  9. Dropstones

    Snapshot Title: Dropstones
    Taken by: Callan Bentley

    Image: Konnarock Formation as Cautionary Tale 2
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Iceberg-rafted dropstones.



  10. Ball & pillow

    Snapshot Title: Ball & pillow
    Taken by: Callan Bentley

    Image: Monocline in Hampshire Formation
    Image Owner: Alan Pitts



    Description:

    Looks like some soft sediment deformation to me.



  11. Compare & contrast

    Snapshot Title: Compare & contrast
    Taken by: Callan Bentley

    Image: Konnarock Formation: a GIGAmacro Cautionary Tale
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Properly stacked (left) and improperly (right)



  12. And, yet,

    Snapshot Title: And, yet,
    Taken by: Callan Bentley

    Image: Konnarock Formation: a GIGAmacro Cautionary Tale
    Image Owner: Robin Rohrback-Schiavone



    Description:

    ...some areas look just fine upon zooming in. What gives?



  13. Seeing double

    Snapshot Title: Seeing double
    Taken by: Callan Bentley

    Image: Konnarock Formation: a GIGAmacro Cautionary Tale
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Focal stacking chooses two different "base" images?



  14. The dreaded 'starburst' effect

    Snapshot Title: The dreaded 'starburst' effect
    Taken by: Callan Bentley

    Image: Konnarock Formation: a GIGAmacro Cautionary Tale
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Why, oh why?



  15. Focal stacking 'edge' artifact

    Snapshot Title: Focal stacking 'edge' artifact
    Taken by: Callan Bentley

    Image: Konnarock Formation: a GIGAmacro Cautionary Tale
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Aaaarrrrgggghhh.



  16. Cross-beds

    Snapshot Title: Cross-beds
    Taken by: Callan Bentley

    Image: Ferron Sandstone
    Image Owner: Mark Barton



    Description:

    Sweet - "textbook" example.



  17. Weird lumps

    Snapshot Title: Weird lumps
    Taken by: Callan Bentley

    Image: Flute Casts in Brallier Formation Shale
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Not sure how to interpret this blob, the biggest protrusion from the bottom of the bed. (Burrow infill?)



  18. Interesting way these...

    Snapshot Title: Interesting way these...
    Taken by: Callan Bentley

    Image: Flute Casts in Brallier Formation Shale
    Image Owner: Robin Rohrback-Schiavone



    Description:

    ...joints (veins) tip out with respect to one another.



  19. Tool marks

    Snapshot Title: Tool marks
    Taken by: Callan Bentley

    Image: Flute Casts in Brallier Formation Shale
    Image Owner: Robin Rohrback-Schiavone



    Description:

    These straight grooves (angled from lower left towards upper right) may be tool marks (gouges in the sediment when a stick or shell or something -- a "tool" -- is dragged in a current over the sedimen...



  20. Interesting fracture/vein relationship

    Snapshot Title: Interesting fracture/vein relationship
    Taken by: Callan Bentley

    Image: Flute Casts in Brallier Formation Shale
    Image Owner: Robin Rohrback-Schiavone



    Description:

    They're the same, but then the split, and re-merge?



  21. More sweet flutes

    Snapshot Title: More sweet flutes
    Taken by: Callan Bentley

    Image: Flute Casts in Brallier Formation Shale
    Image Owner: Robin Rohrback-Schiavone



    Description:

    pointed at upstream end, flaring out wider on the downstream end.



  22. Two flute casts

    Snapshot Title: Two flute casts
    Taken by: Callan Bentley

    Image: Flute Casts in Brallier Formation Shale
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Current direction was left-to-right in this image. You're looking at the bottom of the bedding plane.



  23. Neat to see

    Snapshot Title: Neat to see
    Taken by: Callan Bentley

    Image: Brallier shale NEW new Route 55 WV (version 1)
    Image Owner: Alan Pitts



    Description:

    how the location of the seeps (marked by ice) are controlled by the change in dip of the beds (trough of an open, upright syncline).



  24. Karst signature

    Snapshot Title: Karst signature
    Taken by: Callan Bentley

    Image: Syncline in Helderburg Group
    Image Owner: Alan Pitts



    Description:

    Is this breakdown from a collapsed cave system?



  25. Hinge 2

    Snapshot Title: Hinge 2
    Taken by: Callan Bentley

    Image: Syncline in Helderburg Group
    Image Owner: Alan Pitts



    Description:

    Not as well defined up here...



  26. Hinge

    Snapshot Title: Hinge
    Taken by: Callan Bentley

    Image: Syncline in Helderburg Group
    Image Owner: Alan Pitts



    Description:

    Nice and crisp, straight limbs, apparently at close to a right angle to one another.



  27. Lens cap for scale

    Snapshot Title: Lens cap for scale
    Taken by: Callan Bentley

    Image: Genoa Fault Closeup, Carson Valley, Nevada
    Image Owner: ahochstaedter



    Description:

    Pentax



  28. Mr. E. coli

    Snapshot Title: Mr. E. coli
    Taken by: Callan Bentley

    Image: Thoroughfare Gap Weverton Formation, upper section
    Image Owner: Alan Pitts



    Description:

    looks downtrodden and mopey...



  29. Ponies!

    Snapshot Title: Ponies!
    Taken by: Callan Bentley

    Image: White Rocks Overlook Bull Run Mountain, Virginia
    Image Owner: Alan Pitts



    Description:

    A whole herd of them!



  30. Mr. E. coli

    Snapshot Title: Mr. E. coli
    Taken by: Callan Bentley

    Image: White Rocks Overlook Bull Run Mountain, Virginia
    Image Owner: Alan Pitts



    Description:

    is out of focus, and I'm sure he's okay with that.



  31. House

    Snapshot Title: House
    Taken by: Callan Bentley

    Image: White Rocks Overlook Bull Run Mountain, Virginia
    Image Owner: Alan Pitts



    Description:

    Nice looking little shack.



  32. Bedding with foliation overprint

    Snapshot Title: Bedding with foliation overprint
    Taken by: Callan Bentley

    Image: Limy slate
    Image Owner: Callan Bentley



    Description:

    This sample is metasedimentary: the horizontal bedding is original layers of sediment, while the diagonal planes are a later addition: metamorphic foliation.



  33. garnet porphyroblast

    Snapshot Title: garnet porphyroblast
    Taken by: Callan Bentley

    Image: Garnet Schist
    Image Owner: Callan Bentley



    Description:

    .



  34. Feldspar

    Snapshot Title: Feldspar
    Taken by: Callan Bentley

    Image: Beartooth Andesite
    Image Owner: Callan Bentley



    Description:

    with cleavage and zonation



  35. Nice warm day?

    Snapshot Title: Nice warm day?
    Taken by: Callan Bentley

    Image: Railroad Cut Linden, VA
    Image Owner: Alan Pitts



    Description:

    :)



  36. Lots of dendrites nucleate on the edge

    Snapshot Title: Lots of dendrites nucleate on the edge
    Taken by: Callan Bentley

    Image: Pyrolusite dendrites on a limestone joint surface
    Image Owner: Callan Bentley



    Description:

    of the sample.



  37. Lovely branching dendrites

    Snapshot Title: Lovely branching dendrites
    Taken by: Callan Bentley

    Image: Pyrolusite dendrites on a limestone joint surface
    Image Owner: Callan Bentley



    Description:

    .



  38. Dendrite fan with red lint thread!

    Snapshot Title: Dendrite fan with red lint thread!
    Taken by: Callan Bentley

    Image: Pyrolusite dendrites on a limestone joint surface
    Image Owner: Callan Bentley



    Description:

    .



  39. Dendrite fan

    Snapshot Title: Dendrite fan
    Taken by: Callan Bentley

    Image: Pyrolusite dendrites on a limestone joint surface
    Image Owner: Callan Bentley



    Description:

    Awesome!



  40. Conchoidal fracture in quartz

    Snapshot Title: Conchoidal fracture in quartz
    Taken by: Callan Bentley

    Image: Test Gigamacro #2
    Image Owner: Callan Bentley



    Description:

    little "clamshell" ribs



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